I've just done something like this. To find the correct variable names, I went to General Settings, Company Options and viewed the source.
I looked at the name of the input boxes for company address etc. For example:
Code:
<input type=text size=30 name=location_address value="123 High Road">
Based on the info above, I simply used {$config.Company.location_address} and ta-da, it appears.